Cianobactérias e Marte?

https://www.space.com/42001-weird-underground-microbes-aid-mars-life-search.html

Citando:
"That big switch from photosynthesis to chemical subsistence is intriguing, because while Mars today isn't the sort of place life as we know it could thrive, it was many, many years ago. So, if cyanobacteria on Earth snuck below the surface and found a new way to make a living, does that increase the odds something similar happened with hypothetical cyanobacteria-like organisms on Mars?"